11
AB-7489-U
Procedure to change the actuator mounting position
IMPORTANT:
•
Do not change the combination of the valve, yoke, and actuator.
•
Set the ACTIVAL in 100 % position when changing the mounting position. If the valve in 0 % position is
assembled with the actuator in 100 % position, the actuator put torque on the closed valve, and the gear of
the actuator gets damaged.
1) Remove the screws connecting the actuator and the yoke. Lift the actuator and detach it from the yoke. Make sure that
the groove on the top of the valve stem is parallel to the pipes (indicating the valve in 100 % position). <Step 1 in Fig. 7>
2) Remove the screws connecting the yoke and the valve. <Step 2 in Fig. 7>
3) Change the facing direction of the yoke. The yoke and actuator can be horizontally rotated every 90° (0°/90°/180°/270°
from the factory preset position) to mount onto the valve.
4) A thermal insulation sheet is inserted between the yoke and the valve. When changing the mounting positions, reinsert
the sheet and then fit the yoke into the new mounting position.
5) Before fixing the yoke to the valve with the screws, check that the actuator engages correctly with the valve stem (at the
new mounting position). Check that the pointer of the actuator indicates 100 % position as well. Then, fix the yoke to the
valve. <Step 3 in Fig. 7>
6) Mount the actuator. Place the actuator, with its facing direction changed, on the yoke, and fix them with the screws.
<Step 4 in Fig. 7>
7) Check that the ACTIVAL with the mounting position changed operates smoothly (from 0 % to 100 %).
Figure 7. Changing the actuator mounting position
Step 1
Step 4
Lift off the actuator.
Change the actuator mounting
position, and remount the
actuator on the yoke.
Step 2
Step 3
Detach the yoke from the
valve.
Change the yoke mounting
position, and remount the
yoke on the valve.
Groove
Valve stem
Thermal insulation sheet
